Celebrating HKS 45th anniversary the unique exhaust sound of the Super Turbo Muffler is now available in a limited edition full titanium version. Combining low backpressure design, light weight construction, supple sound, and exclusivity this is the ultimate exhaust system for your Skyline GT-R! After we sell out of these, there will not be any more made. Sure to be a collectors item and go up in value in the years to come. Don't wait, we only have a few left.